Analysis Overview
SHA256
db670caff58f0802a99720ba76d29940eb62174bb3a884cd9a14432666eab7bf
Threat Level: Known bad
The file ryuk.bin.zip was found to be: Known bad.
Malicious Activity Summary
Ryuk
Loads dropped DLL
Executes dropped EXE
Deletes itself
Checks computer location settings
Adds Run key to start application
Drops file in Program Files directory
Unsigned PE
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Modifies registry class
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2023-11-25 03:09
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2023-11-25 03:09
Reported
2023-11-25 03:12
Platform
win10v2004-20231023-en
Max time kernel
152s
Max time network
150s
Command Line
Signatures
Ryuk
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\ryuk.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000\Control Panel\International\Geo\Nation | C:\users\Public\HrGdb.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\users\Public\HrGdb.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\users\Public\HrGdb.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchos = "C:\\users\\Public\\HrGdb.exe" | C:\Windows\system32\reg.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\PersonalR_Grace-ppd.xrm-ms | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\ExcelR_Trial-pl.xrm-ms | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\MondoVL_KMS_Client-ppd.xrm-ms | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremDemoR_BypassTrial365-ppd.xrm-ms | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\MondoR_EnterpriseSub_Bypass30-ul-oob.xrm-ms | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTrial5-ul-oob.xrm-ms | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\Lang\en.ttt | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Common Files\microsoft shared\ink\el-GR\RyukReadMe.txt | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jre-1.8\bin\plugin2\RyukReadMe.txt | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jre-1.8\legal\jdk\jpeg.md | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-0016-0000-1000-0000000FF1CE.xml | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\MondoR_SubTest-ul-oob.xrm-ms | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\ProfessionalR_OEM_Perp-ul-oob.xrm-ms | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Integration\C2RManifest.office32ww.msi.16.x-none.xml | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_Retail-ul-phn.xrm-ms | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\Lang\fr.txt | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Common Files\microsoft shared\ink\sv-SE\RyukReadMe.txt | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk-1.8\jre\lib\ext\cldrdata.jar | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Franklin Gothic.xml | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\RyukReadMe.txt | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\History.txt | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk-1.8\jre\lib\deploy\messages_pt_BR.properties | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription4-pl.xrm-ms | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\MondoR_SubTest2-ul-oob.xrm-ms | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jre-1.8\lib\deploy\messages_ja.properties | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_OEM_Perp3-ul-phn.xrm-ms | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jre-1.8\lib\security\cacerts | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\MondoR_BypassTrial180-ppd.xrm-ms | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk-1.8\jre\legal\javafx\libxslt.md | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Integration\C2RIntLoc.en-us.16.msi | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\PowerPoint2019R_Grace-ul-oob.xrm-ms | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\O365EduCloudEDUR_SubTrial-pl.xrm-ms | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\Lang\fy.txt | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\Lang\ku-ckb.txt | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\keypad\RyukReadMe.txt | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Common Files\System\Ole DB\en-US\sqlxmlx.rll.mui | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Common Files\System\Ole DB\sqloledb.rll | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\PersonalPipcR_OEM_Perp-ul-oob.xrm-ms | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jre-1.8\lib\accessibility.properties | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\OutlookVL_MAK-pl.xrm-ms | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\Lang\et.txt | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Calibri Light-Constantia.xml | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\client-issuance-stil.xrm-ms | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\MondoVL_MAK-ul-oob.xrm-ms | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\Outlook2019R_Retail-ul-oob.xrm-ms | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk-1.8\include\jvmti.h | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk-1.8\jre\lib\fontconfig.properties.src | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk-1.8\legal\jdk\cryptix.md | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\Excel2019R_Retail-ul-phn.xrm-ms | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\Lang\sq.txt | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Arial-Times New Roman.xml | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_SubTrial2-pl.xrm-ms | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jre-1.8\lib\amd64\jvm.cfg | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\oskmenu.xml | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Common Files\microsoft shared\Source Engine\RyukReadMe.txt | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk-1.8\jre\legal\jdk\joni.md | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk-1.8\lib\jvm.lib | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Integration\C2RInt.16.msi | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\O365BusinessR_Subscription-ppd.xrm-ms | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk-1.8\include\win32\jawt_md.h | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk-1.8\jre\legal\javafx\glib.md | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jre-1.8\lib\images\cursors\win32_LinkNoDrop32x32.gif | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_Subscription4-ppd.xrm-ms | C:\Windows\system32\sihost.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\7zCon.sfx | C:\Windows\system32\sihost.exe | N/A |
Enumerates physical storage devices
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\SystemAppData\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\PersistedStorageItemTable\CurrentWorkingDirectory | C:\Windows\System32\RuntimeBroker.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\SystemAppData\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\WasEverActivated = "1" | C:\Windows\system32\sihost.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\MuiCache | C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe | N/A |
| Key created | \REGISTRY\MACHINE\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\Deployment\Package\*\S-1-5-21-3125601242-331447593-1512828465-1000\{B65F59C5-4EDF-42E0-8050-C660401E40AF} | C:\Windows\System32\RuntimeBroker.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\SystemAppData\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\PersistedStorageItemTable | C:\Windows\System32\RuntimeBroker.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\SystemAppData\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\PersistedStorageItemTable\ManagedByApp | C:\Windows\System32\RuntimeBroker.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\SystemAppData\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\PersistedStorageItemTable\MostRecentlyUsed | C:\Windows\System32\RuntimeBroker.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\users\Public\HrGdb.exe | N/A |
| N/A | N/A | C:\users\Public\HrGdb.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\users\Public\HrGdb.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\System32\RuntimeBroker.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\System32\RuntimeBroker.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\System32\RuntimeBroker.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost.exe
"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost.exe" -ServerName:InputApp.AppX9jnwykgrccxc8by3hsrsh07r423xzvav.mca
C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
"C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
C:\Windows\system32\taskhostw.exe
taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
C:\Windows\system32\sihost.exe
sihost.exe
C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
C:\Users\Admin\AppData\Local\Temp\ryuk.exe
"C:\Users\Admin\AppData\Local\Temp\ryuk.exe"
C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
C:\users\Public\HrGdb.exe
"C:\users\Public\HrGdb.exe" C:\Users\Admin\AppData\Local\Temp\ryuk.exe
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\users\Public\HrGdb.exe" /f
C:\Windows\system32\reg.exe
REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\users\Public\HrGdb.exe" /f
C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 146.78.124.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 1.208.79.178.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 14.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 121.175.53.84.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 170.117.168.52.in-addr.arpa | udp |
Files
C:\Users\Public\HrGdb.exe
| MD5 | 31bd0f224e7e74eee2847f43aae23974 |
| SHA1 | 92e331e1e8ad30538f38dd7ba31386afafa14a58 |
| SHA256 | 8b0a5fb13309623c3518473551cb1f55d38d8450129d4a3c16b476f7b2867d7d |
| SHA512 | a13f05a12b084ef425f542ff4be824bbccb5dbdfe085af8b7e19d81a6bcba4b8c1debcc38f6b57bc9265a4db21eed70852ece8cc62b3ef14c47fca3035a55249 |
C:\Users\Public\HrGdb.exe
| MD5 | 31bd0f224e7e74eee2847f43aae23974 |
| SHA1 | 92e331e1e8ad30538f38dd7ba31386afafa14a58 |
| SHA256 | 8b0a5fb13309623c3518473551cb1f55d38d8450129d4a3c16b476f7b2867d7d |
| SHA512 | a13f05a12b084ef425f542ff4be824bbccb5dbdfe085af8b7e19d81a6bcba4b8c1debcc38f6b57bc9265a4db21eed70852ece8cc62b3ef14c47fca3035a55249 |
C:\users\Public\HrGdb.exe
| MD5 | 31bd0f224e7e74eee2847f43aae23974 |
| SHA1 | 92e331e1e8ad30538f38dd7ba31386afafa14a58 |
| SHA256 | 8b0a5fb13309623c3518473551cb1f55d38d8450129d4a3c16b476f7b2867d7d |
| SHA512 | a13f05a12b084ef425f542ff4be824bbccb5dbdfe085af8b7e19d81a6bcba4b8c1debcc38f6b57bc9265a4db21eed70852ece8cc62b3ef14c47fca3035a55249 |
memory/2692-8-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-9-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-23-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
F:\RyukReadMe.txt
| MD5 | cd99cba6153cbc0b14b7a849e4d0180f |
| SHA1 | 375961866404a705916cbc6cd4915de7d9778923 |
| SHA256 | 74c43a177917b1d57ea2eaf6212ccf3b9012b4d68bc45284349443eed0bf5ee2 |
| SHA512 | 0c9f250c0e2ec9736b072a9807b6c3bec4b670ab2f511e65cf5d79e9a8c9a209eb91736ce2765b52b6d94a57c6aa1c16bb08e16727660699b70608439c8b7cda |
memory/2692-32-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-34-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-36-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-42-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-46-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-48-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-50-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-43-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-54-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-53-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-56-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-61-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-58-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-66-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-64-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-71-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-70-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-73-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-77-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-82-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-85-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-88-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-91-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-94-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-80-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-95-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-97-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-101-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-76-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-104-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-107-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-110-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-113-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2692-105-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/2876-222-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
memory/3780-218-0x00007FF605530000-0x00007FF6058BE000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2023-11-25 03:09
Reported
2023-11-25 03:11
Platform
win7-20231023-en
Max time kernel
150s
Max time network
126s
Command Line
Signatures
Ryuk
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\users\Public\FaiDx.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\users\Public\FaiDx.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ryuk.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3618187007-3650799920-3290345941-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchos = "C:\\users\\Public\\FaiDx.exe" | C:\Windows\system32\reg.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Program Files\DVD Maker\Shared\DvdStyles\rectangle_photo_Thumbnail.bmp | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\DVD Maker\Shared\DvdStyles\Travel\TravelIntroToMainMask.wmv | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\config\ModuleAutoDeps\org-openide-loaders.xml | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\Lang\si.txt | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\DVD Maker\Shared\DvdStyles\BabyBoy\BabyBoyNotesBackground_PAL.wmv | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.flightrecorder.ui_5.5.0.165303.jar | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.launcher.nl_zh_4.4.0.v20140623020002.jar | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.rjmx_5.5.0.165303\schema\triggerEvaluators.exsd | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\deploy\ffjcext.zip | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Asia\Kuching | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Asia\Oral | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\SystemV\AST4 | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.ecf.filetransfer.httpclient4.ssl.feature_1.0.0.v20140827-1444\RyukReadMe.txt | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\config\Modules\org-netbeans-lib-uihandler.xml | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\Lang\az.txt | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\DVD Maker\Shared\DvdStyles\Travel\content-background.png | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Monterrey | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Etc\GMT+4 | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\com.jrockit.mc.rcp.product_5.5.0.165303\feature.properties | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Common Files\Microsoft Shared\Stationery\Shades of Blue.htm | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Common Files\System\Ole DB\es-ES\sqloledb.rll.mui | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\DVD Maker\Shared\DvdStyles\BabyBoy\nav_leftarrow.png | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\DVD Maker\Shared\DvdStyles\Stacking\RyukReadMe.txt | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.help.webapp.nl_zh_4.4.0.v20140623020002.jar | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Europe\Vienna | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.ecf.core.feature_1.1.0.v20140827-1444\epl-v10.html | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.emf.ecore_2.10.1.v20140901-1043\META-INF\ECLIPSE_.SF | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.equinox.p2.rcp.feature_1.2.0.v20140523-0116\feature.xml | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\DVD Maker\Shared\DvdStyles\Travel\btn-back-static.png | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.p2.ui.sdk.scheduler_1.2.0.v20140422-1847.jar | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Guyana | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.ecf.filetransfer.ssl.feature_1.0.0.v20140827-1444\epl-v10.html | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\DVD Maker\Shared\DvdStyles\DvdTransform.fx | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\deploy\messages_ja.properties | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\ext\dnsns.jar | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Belem | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\include\win32\RyukReadMe.txt | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.console.ui.notification_5.5.0.165303\html\dcommon\gifs\contbig.gif | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.jface.text.nl_zh_4.4.0.v20140623020002.jar | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Common Files\Microsoft Shared\OfficeSoftwareProtectionPlatform\RyukReadMe.txt | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Pacific\Bougainville | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\javax.annotation_1.2.0.v201401042248.jar | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\DVD Maker\Shared\DvdStyles\BabyGirl\curtains.png | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.apache.jasper.glassfish_2.2.2.v201205150955.jar | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.help_3.6.0.v20130326-1254.jar | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\North_Dakota\Beulah | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Asia\Riyadh89 | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\com.jrockit.mc.feature.rcp_5.5.0.165303\feature.properties | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\History.txt | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\7-Zip\Lang\ast.txt | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\DVD Maker\Shared\DvdStyles\rectangle_babypink_Thumbnail.bmp | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\ExpandSwitch.jpeg | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\DVD Maker\Shared\DvdStyles\WhiteDot.png | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Africa\RyukReadMe.txt | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.help.webapp_3.6.300.v20140407-1855.jar | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\db\lib\derbyLocale_pt_BR.jar | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.console.ui.notification_5.5.0.165303\META-INF\MANIFEST.MF | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.e4.ui.css.swt.nl_zh_4.4.0.v20140623020002.jar | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\org.eclipse.equinox.p2.artifact.repository.nl_ja_4.4.0.v20140623020002.jar | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Common Files\Microsoft Shared\ink\Content.xml | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\DVD Maker\Shared\DvdStyles\Shatter\NavigationRight_ButtonGraphic.png | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Europe\Kiev | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Europe\Tallinn | C:\Windows\system32\taskhost.exe | N/A |
| File opened for modification | C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\config\Modules\org-netbeans-api-search.xml | C:\Windows\system32\taskhost.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\users\Public\FaiDx.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\users\Public\FaiDx.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
C:\Windows\system32\taskhost.exe
"taskhost.exe"
C:\Users\Admin\AppData\Local\Temp\ryuk.exe
"C:\Users\Admin\AppData\Local\Temp\ryuk.exe"
C:\users\Public\FaiDx.exe
"C:\users\Public\FaiDx.exe" C:\Users\Admin\AppData\Local\Temp\ryuk.exe
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\users\Public\FaiDx.exe" /f
C:\Windows\system32\reg.exe
REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\users\Public\FaiDx.exe" /f
Network
Files
\Users\Public\FaiDx.exe
| MD5 | 31bd0f224e7e74eee2847f43aae23974 |
| SHA1 | 92e331e1e8ad30538f38dd7ba31386afafa14a58 |
| SHA256 | 8b0a5fb13309623c3518473551cb1f55d38d8450129d4a3c16b476f7b2867d7d |
| SHA512 | a13f05a12b084ef425f542ff4be824bbccb5dbdfe085af8b7e19d81a6bcba4b8c1debcc38f6b57bc9265a4db21eed70852ece8cc62b3ef14c47fca3035a55249 |
C:\Users\Public\FaiDx.exe
| MD5 | 31bd0f224e7e74eee2847f43aae23974 |
| SHA1 | 92e331e1e8ad30538f38dd7ba31386afafa14a58 |
| SHA256 | 8b0a5fb13309623c3518473551cb1f55d38d8450129d4a3c16b476f7b2867d7d |
| SHA512 | a13f05a12b084ef425f542ff4be824bbccb5dbdfe085af8b7e19d81a6bcba4b8c1debcc38f6b57bc9265a4db21eed70852ece8cc62b3ef14c47fca3035a55249 |
memory/1116-5-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-7-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-8-0x000000013FA00000-0x000000013FD8E000-memory.dmp
C:\RyukReadMe.txt
| MD5 | cd99cba6153cbc0b14b7a849e4d0180f |
| SHA1 | 375961866404a705916cbc6cd4915de7d9778923 |
| SHA256 | 74c43a177917b1d57ea2eaf6212ccf3b9012b4d68bc45284349443eed0bf5ee2 |
| SHA512 | 0c9f250c0e2ec9736b072a9807b6c3bec4b670ab2f511e65cf5d79e9a8c9a209eb91736ce2765b52b6d94a57c6aa1c16bb08e16727660699b70608439c8b7cda |
memory/1116-22-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-23-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-24-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-26-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-29-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-31-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-33-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-35-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-40-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-41-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-43-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-47-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-49-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-51-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-53-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-62-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-58-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-65-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-66-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-69-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-68-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-71-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-76-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-78-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-81-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-83-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-90-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-95-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-94-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-97-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-105-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-102-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-108-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-111-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-113-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-118-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1116-1163-0x000000013FA00000-0x000000013FD8E000-memory.dmp
memory/1184-1355-0x000000013FA00000-0x000000013FD8E000-memory.dmp